V0508 Cyg (Eclipsing binary)

RA: 20h 34m 05.95s, DE: +46° 52' 16.50" (308.5247916567, 46.8712499993)

8/23/2017, 19:05 - 8/24/2017, 02:28 (UTC)

Data:
  • Observer: Martin Lehky
  • Created: 9/7/2017, 16:10
  • Station: Hradec Králové, CZ (MPC 048)
  • Instrument: 0.40-m f/5 + CCD G2-1600 + BVRcIc
  • Photometric band: V
  • Time standard: Gjd
  • Brightness in: Mag
Note:
# NAME V 508 Cyg
# VAR 20:34:05.97 +46:52:16.1 2448888.5923 0.7796587 11.99-12.68V EW (VSX 20170811)
# OBS Martin Lehky (Hradec Kralove CZ; 0.40-m f/5 reflector + CCD G2-1600)
# FLT VRcIc
# RED CMunipack 1.1.26 + Peranso 2.50 + SPHE/VSES Upload Form (2012) var.astro.cz
# NOTE 23/24 VIII 2017 V_120_90s (75/42); R_120_60s (78/46); I_120_60s (78/45); 7.4h; minimum P
# NOTE FLT V 2457989.52036 +/- 0.00039; 20170824 00:29:19 (UT) GEO
# NOTE FLT Rc 2457989.52034 +/- 0.00025; 20170824 00:29:17 (UT) GEO
# NOTE FLT Ic 2457989.52129 +/- 0.00026; 20170824 00:30:39 (UT) GEO
# NOTE FLT VRcIc average 2457989.52066 +/- 0.00039; 20170824 00:29:45 (UT) GEO
# COND clear weather
Determined minima
  • P: 2457989.52028 (8/24/2017, 00:29)
    HJDmin: 2457989.52302 +/- 0.00033  
    Heliocentric correction: 0.00274
    Note: 
    # NAME V 508 Cyg
# VAR 20:34:05.97 +46:52:16.1 2448888.5923 0.7796587 11.99-12.68V EW (VSX 20170811)
# OBS Martin Lehky (Hradec Kralove CZ; 0.40-m f/5 reflector + CCD G2-1600)
# FLT VRcIc
# RED CMunipack 1.1.26 + Peranso 2.50 + SPHE/VSES Upload Form (2012) var.astro.cz
# NOTE 23/24 VIII 2017 V_120_90s (75/42); R_120_60s (78/46); I_120_60s (78/45); 7.4h; minimum P
# NOTE FLT V 2457989.52036 +/- 0.00039; 20170824 00:29:19 (UT) GEO
# NOTE FLT Rc 2457989.52034 +/- 0.00025; 20170824 00:29:17 (UT) GEO
# NOTE FLT Ic 2457989.52129 +/- 0.00026; 20170824 00:30:39 (UT) GEO
# NOTE FLT VRcIc average 2457989.52066 +/- 0.00039; 20170824 00:29:45 (UT) GEO
# COND clear weather

----- EBFit result: -----
Tmin = 2457989.52028
Error (1 sigma): +0.00030/-0.00036 (Bootstrapping), +0.00028/-0.00035 (Prayer bead), +0.00040/-0.00040 (LSM)
Error (95% CI):  +0.00058/-0.00072 (Bootstrapping), +0.00077/-0.00049 (Prayer bead)
LSM: chi^2 = 49.2, n_freedom = 43
  • P: 2457989.52045 (8/24/2017, 00:29)
    HJDmin: 2457989.52319 +/- 0.00024  
    Heliocentric correction: 0.00274
    Note: 
    # NAME V 508 Cyg
# VAR 20:34:05.97 +46:52:16.1 2448888.5923 0.7796587 11.99-12.68V EW (VSX 20170811)
# OBS Martin Lehky (Hradec Kralove CZ; 0.40-m f/5 reflector + CCD G2-1600)
# FLT VRcIc
# RED CMunipack 1.1.26 + Peranso 2.50 + SPHE/VSES Upload Form (2012) var.astro.cz
# NOTE 23/24 VIII 2017 V_120_90s (75/42); R_120_60s (78/46); I_120_60s (78/45); 7.4h; minimum P
# NOTE FLT V 2457989.52036 +/- 0.00039; 20170824 00:29:19 (UT) GEO
# NOTE FLT Rc 2457989.52034 +/- 0.00025; 20170824 00:29:17 (UT) GEO
# NOTE FLT Ic 2457989.52129 +/- 0.00026; 20170824 00:30:39 (UT) GEO
# NOTE FLT VRcIc average 2457989.52066 +/- 0.00039; 20170824 00:29:45 (UT) GEO
# COND clear weather

----- EBFit result: -----
Tmin = 2457989.52045
Error (1 sigma): +0.00016/-0.00032 (Bootstrapping), +0.00030/-0.00036 (Prayer bead), +0.00024/-0.00024 (LSM)
Error (95% CI):  +0.00040/-0.00060 (Bootstrapping), +0.00060/-0.00045 (Prayer bead)
LSM: chi^2 = 55.8, n_freedom = 41
  • P: 2457989.52120 (8/24/2017, 00:30)
    HJDmin: 2457989.52394 +/- 0.00027  
    Heliocentric correction: 0.00274
    Note: 
    # NAME V 508 Cyg
# VAR 20:34:05.97 +46:52:16.1 2448888.5923 0.7796587 11.99-12.68V EW (VSX 20170811)
# OBS Martin Lehky (Hradec Kralove CZ; 0.40-m f/5 reflector + CCD G2-1600)
# FLT VRcIc
# RED CMunipack 1.1.26 + Peranso 2.50 + SPHE/VSES Upload Form (2012) var.astro.cz
# NOTE 23/24 VIII 2017 V_120_90s (75/42); R_120_60s (78/46); I_120_60s (78/45); 7.4h; minimum P
# NOTE FLT V 2457989.52036 +/- 0.00039; 20170824 00:29:19 (UT) GEO
# NOTE FLT Rc 2457989.52034 +/- 0.00025; 20170824 00:29:17 (UT) GEO
# NOTE FLT Ic 2457989.52129 +/- 0.00026; 20170824 00:30:39 (UT) GEO
# NOTE FLT VRcIc average 2457989.52066 +/- 0.00039; 20170824 00:29:45 (UT) GEO
# COND clear weather

----- EBFit result: -----
Tmin = 2457989.52120
Error (1 sigma): +0.00027/-0.00027 (Bootstrapping), +0.00024/-0.00028 (Prayer bead), +0.00024/-0.00024 (LSM)
Error (95% CI):  +0.00052/-0.00054 (Bootstrapping), +0.00048/-0.00046 (Prayer bead)
LSM: chi^2 = 105.3, n_freedom = 45
Actions:
Light curve
Neighborhood of the object, comparison and check stars
Chart - V0508 Cyg, JD 2457989.29525
Comments